You've gotten plenty of replies already, many of which I haven't read. But I have this to say: I'm 31 and I often feel the same, but it's not real. Just read Dijkstra and don't worry about Angular, Ember, or the latest fad.

You'll find out that the real knowledge is relatively stable and how well people know the latest fad frameworks has little to do with their long term relevance or employability.